CN112118635B

CN112118635B - Uplink access method, system and computer readable storage medium

Info

Publication number: CN112118635B
Application number: CN201910536310.8A
Authority: CN
Inventors: 许森; 张乐; 韦乐平; 孙震强; 曹磊; 祁峰; 赵晔
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2023-03-31
Anticipated expiration: 2039-06-20
Also published as: CN112118635A

Abstract

The disclosure provides an uplink access method, a system and a computer readable storage medium, and relates to the technical field of communication. The uplink access method disclosed by the invention comprises the following steps: the method comprises the steps that under the condition that the terminal fails to access a first cell in an uplink mode, the terminal reports Radio Link Failure (RLF) information to a second cell connected with the terminal; the second cell generates an error report according to the RLF information, wherein the error report comprises the cell identification and the failure reason of the first cell; the second cell sends the error report to the first cell or a network management entity so as to generate an uplink access parameter adjustment strategy aiming at the first cell according to the error report; and the first cell adjusts the strategy adjustment parameters according to the uplink access parameters. By the method, the cell with the terminal access failure can adjust parameters according to the error report, optimize cell parameters and improve the success rate of the terminal uplink access.

Description

Uplink access method, system and computer readable storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an uplink access method, system, and computer-readable storage medium.

Background

The 5G is used as a main technology of a next-generation wireless network and has the technical characteristics of supporting ultra wide band, large connection and the like. Aiming at the problem of insufficient 5G Uplink coverage, a SUL (Supplementary Uplink carrier) concept is introduced into Rel-15, and the main idea is to use a carrier of a low frequency band as a Supplementary carrier of an NR (New Radio, new air interface) high frequency band to solve the problem of insufficient NR Uplink coverage.

According to the mechanism of Rel-15, a network side configures configuration information of a common carrier NUL (uplink carrier of a frequency point same as a downlink carrier) and a SUL carrier in a broadcast message, and a terminal side judges and selects the SUL or the NUL according to the measured RSRP (Reference Signal Receiving Power) of the downlink carrier and a configuration threshold in the broadcast message configuration in the initial access process.

In the 4G network, if a radio link failure occurs in the access process of the terminal (for example, caused by the reason that Preamble transmission reaches the maximum number of times), the related failure condition can be recorded, and 1bit is adopted to indicate that the network has stored the related report in the processes of random access, connection reestablishment and the like. The network side reports the related failure information to be used for the subsequent optimization through a related RRC (Radio Resource Control) signaling procedure, as shown in fig. 1A. In the NSA (Non-Standalone networking) scenario, radio link Failure and other situations may also occur, partly because of uplink access Failure, and in the relevant specifications, the UE (User Equipment, user terminal) needs to report the report of the SCG Failure Information NR on the LTE side, as shown in fig. 1B, which carries the relevant Information of Failure. The SCG Failure Information NR can be as follows:

at present, there is a design scheme for supplementing uplink, that is, a manner similar to FDD (Frequency Division duplex) is adopted to match a high-Frequency NR carrier as a downlink carrier, a low-Frequency LTE carrier is adopted as an uplink carrier, and a Frequency Division duplex manner is adopted to operate, and when the NR carrier is transmitted in uplink, at least an uplink timeslot of the NR carrier is adopted as an uplink transmission direction of a terminal, as shown in fig. 2.

The scheme has a certain similarity with the SUL, and if the design scheme of the SUL is multiplexed, considering that the assumption that LTE (Long Term Evolution ) and NR co-site coverage is assumed in the design mechanism of Rel-15, the coverage and networking conditions are relatively complex in actual deployment, as shown in fig. 3, there is a case where a plurality of LTE carriers exist in one NR coverage area, for example, LTE adopts six-sector deployment and NR with the same coverage adopts three-sector deployment, resulting in two LTE sectors in one NR sector. As shown in fig. 4, an indoor station and an outdoor station of LTE exist in the coverage area of NR. Therefore, for the situation that there are multiple uplink carriers in actual deployment, if the access performance of multiple uplink supplementary carriers in Rel-16 needs to be optimized, the current 5G protocol still has the following problems to be studied:

an inactive state is introduced in an NR eMBB (Enhanced Mobile Broadband) scenario, when a terminal needs to be in a connected state, it needs to access in a residential cell, which may cause an RRC recovery Failure due to unreasonable access parameters, which needs to reflect an inactive state in an RLF (Radio Link Failure).

When an SCG (Secondary Cell group) fails, the reported information may include descriptions of the uplink failure condition due to unreasonable uplink supplementary carrier setting, and the subsequent LTE side needs to notify the NR side or report the information to the network manager according to the collected parameter information, which is temporarily unsupported in the current specification.

No matter in an SA or NSA scenario, it is currently impossible to distinguish whether an access is a normal uplink carrier or a certain supplementary uplink carrier, and the scheme of multiplexing 4G cannot provide a basis for subsequent optimization.

Disclosure of Invention

An object of the present disclosure is to improve a success rate of uplink access.

According to an aspect of the present disclosure, an uplink access method is provided, including: the method comprises the steps that when the terminal fails to access a first cell in an uplink mode, RLF information is reported to a second cell connected with the terminal, the RLF information comprises uplink carrier number information, and the method comprises the following steps: if the terminal is an SA terminal, the first cell is a 5G cell, and the second cell is a cell successfully accessed after the terminal fails to attempt to access the first cell; if the terminal is an NSA terminal, the first cell is an NR cell, and the second cell is an LTE cell accessed by the terminal; the second cell generates an error report according to the RLF information, wherein the error report comprises the cell identification and the failure reason of the first cell; the second cell sends the error report to the first cell or a network management entity so as to generate an uplink access parameter adjustment strategy aiming at the first cell according to the error report; and the first cell adjusts the strategy adjustment parameters according to the uplink access parameters.

In some embodiments, in the case that the terminal is an SA terminal, reporting the RLF information to a second cell to which the terminal is connected includes: after a terminal fails to access a first cell, recording uplink access information, and trying to access other cells, wherein the uplink access information comprises an uplink carrier number, a downlink cell identifier, a downlink cell frequency point number, terminal state information, failure reason information and a measurement result of the downlink cell; under the condition that the second cell is successfully accessed, sending RRC information to the second cell, wherein the RRC information comprises an RLF information identifier; the second cell indicates the terminal to report the RLF information according to the RLF information identifier; and the terminal reports the uplink access information through the RRC information.

In some embodiments, the Uplink Access information further includes a PRACH (Physical Random Access Channel) transmission power before the terminal fails to Access the first cell and/or a PUSCH (Physical Uplink Shared Channel) transmission power before the terminal fails to Access the first cell.

In some embodiments, in the case that the terminal is an NSA terminal, reporting the RLF information to a second cell to which the terminal is connected includes: and after the terminal fails to access the first cell, reporting RLF information to a connected second cell, wherein the RLF information comprises uplink carrier number information.

In some embodiments, the RLF information further includes PRACH transmit power before the terminal failed to access the first cell and/or PUSCH transmit power before the terminal failed to access the first cell.

In some embodiments, the second cell generating the error report from the RLF information comprises: the second cell acquires the cell identification of the cell in which the terminal access fails according to the uplink access information; and the second cell generates an error report, wherein the error report comprises the cell identification and the uplink access information of the first cell.

In some embodiments, the second cell generating the error report from the RLF information comprises: the second cell acquires the cell identification of the cell with the terminal access failure according to the RLF information; and the second cell generates an error report, wherein the error report comprises the cell identification of the first cell, the failure reason information, the measurement result of the downlink cell and the RLF information.

In some embodiments, the second cell sending the error report to the first cell comprises: the second cell sends the error report to the first cell through an inter-cell interface.

In some embodiments, generating the uplink access parameter adjustment policy for the first cell from the error report comprises: and counting the uplink carrier numbers in the error report, and determining the parameters of the uplink carriers of which the occurrence times of the adjustment numbers are greater than a first preset threshold.

In some embodiments, generating the uplink access parameter adjustment policy for the first cell from the error report further comprises at least one of: determining the proportion that the terminal state is in an inactive state and the failure reason is the failure of the competitive random access according to the uplink access information; if the proportion is larger than a second preset threshold, determining to adjust the parameters of the competition timer;

determining that the terminal state is a non-activated state or an activated state according to the uplink Access information, and if the failure reason is the maximum transmission times of the Random Access preamble, if the last PRACH transmission power of the terminal before the terminal fails to Access the first cell is equal to the maximum transmission value, and the measurement result of the downlink cell is higher than a third preset threshold, determining to adjust RACH (Random Access Channel) parameters; or the like, or, alternatively,

and determining that the terminal state is a non-activated state or an activated state according to the uplink access information, and determining to adjust a switching parameter to delay switching of the user to the first cell if the measurement result of the downlink cell is lower than a third preset threshold.

By the method, the terminal can report the relevant parameter information of the cell with the access failure to the cell connected with the terminal, and the cell with the information can generate an error report, so that the cell with the access failure can adjust parameters according to the error report, optimize cell parameters and improve the success rate of uplink access of the terminal.

According to another aspect of the present disclosure, an uplink access system is provided, including: a terminal configured to report RLF information to a second cell connected to the terminal under the condition that uplink access to the first cell fails, where the RLF information includes uplink carrier number information, where: if the terminal is an SA terminal, the first cell is a 5G cell, and the second cell is a cell successfully accessed after the terminal fails to attempt to access the first cell; if the terminal is an NSA terminal, the first cell is an NR cell, and the second cell is an LTE cell accessed by the terminal; a second cell configured to generate an error report according to the RLF information, wherein the error report includes a cell identity and a failure reason of the first cell; sending the error report to a first cell or a network management entity so as to generate an uplink access parameter adjustment strategy aiming at the first cell according to the error report; a first cell configured to adjust a policy adjustment parameter according to an uplink access parameter.

In some embodiments, in case the terminal is an SA terminal: the terminal is configured to record uplink access information after failure of accessing the first cell and try to access other cells, wherein the uplink access information comprises an uplink carrier number, a downlink cell identifier, a downlink cell frequency point number, terminal state information, failure reason information and a measurement result of the downlink cell; under the condition that the second cell is successfully accessed, sending RRC information to the second cell, wherein the RRC information comprises an RLF information identifier, and reporting uplink access information after receiving a reporting instruction from the second cell; and the second cell is configured to instruct the terminal to report the RLF information according to the RLF information identifier in the RRC information sent after the terminal is accessed.

In some embodiments, in case the terminal is an NSA terminal: the terminal is configured to report RLF information to a connected second cell after failure in accessing the first cell, wherein the RLF information comprises uplink carrier number information.

In some embodiments, the second cell is configured to: acquiring a cell identifier of a cell in which the terminal fails to access according to the uplink access information; and generating an error report, wherein the error report comprises the cell identification and the uplink access information of the first cell.

In some embodiments, the second cell is configured to: acquiring a cell identifier of a cell with terminal access failure according to the RLF information; and generating an error report, wherein the error report comprises the cell identification of the first cell, the failure reason information, the measurement result of the downlink cell and the RLF information.

In some embodiments, the second cell is configured to send the error report to the first cell over an inter-cell interface; the first cell is also configured to generate an uplink access parameter adjustment strategy for the first cell according to the error report; or, the second cell is configured to send the error report to a network management entity; and the network management entity is configured to generate an uplink access parameter adjustment strategy aiming at the first cell according to the error report and send the uplink access parameter adjustment strategy to the first cell.

In some embodiments, generating the uplink access parameter adjustment policy for the first cell from the error report comprises: and counting the uplink carrier serial numbers in the error report, and adjusting the parameters of the uplink carrier with the serial number occurrence times larger than a first preset threshold.

In some embodiments, generating the uplink access parameter adjustment policy for the first cell from the error report comprises at least one of: determining the proportion that the terminal state is in an inactive state and the failure reason is the failure of the competitive random access according to the uplink access information; if the proportion is larger than a second preset threshold, determining to adjust the parameters of the competition timer;

determining whether the terminal state is a non-activated state or an activated state according to the uplink access information, and determining to adjust Random Access Channel (RACH) parameters if the PRACH transmitting power of the terminal for the last time before the terminal fails to access the first cell is equal to the maximum transmitting value and the measurement result of the downlink cell is higher than a third preset threshold under the condition that the failure reason is the maximum sending times of the random access preamble;

or the like, or, alternatively,

According to an aspect of still other embodiments of the present disclosure, an uplink access system is provided, including: a memory; and a processor coupled to the memory, the processor configured to perform any of the above upstream access methods based on instructions stored in the memory.

In the uplink access system, the terminal can report the relevant parameter information of the cell with failed access to the cell connected with the terminal, and the cell with the obtained information generates an error report, so that the cell with the failed access can adjust parameters according to the error report, thereby optimizing cell parameters and improving the success rate of uplink access of the terminal.

According to an aspect of still further embodiments of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored, and the instructions, when executed by a processor, implement the steps of any one of the uplink access methods above.

By executing the instructions on the computer-readable storage medium, the terminal can report the relevant parameter information of the cell with failed access to the cell connected with the terminal, and the cell with the obtained information generates an error report, so that the cell with failed access of the terminal can adjust parameters according to the error report, thereby optimizing cell parameters and improving the success rate of uplink access of the terminal.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:

fig. 1A and 1B are signaling flowcharts of uplink failure information reporting in the related art.

Fig. 2 is a schematic diagram of a supplementary upstream networking manner.

Fig. 3 is a diagram illustrating the presence of multiple LTE carriers in NR coverage.

Fig. 4 is a schematic diagram of an indoor station and an outdoor station in which LTE exists in a coverage area of NR.

Fig. 5 is a flow chart of some embodiments of an uplink access method of the present disclosure.

Fig. 6 is a schematic diagram of some application scenarios of the uplink access method of the present disclosure.

Fig. 7 is a flowchart of another embodiment of an uplink access method according to the present disclosure.

Fig. 8A is a signaling interaction diagram of some embodiments of an uplink access method of the present disclosure.

Fig. 8B is a signaling interaction diagram of other embodiments of the uplink access method of the present disclosure.

Fig. 9 is a flowchart of still other embodiments of the uplink access method of the present disclosure.

Fig. 10 is a schematic diagram of some embodiments of an uplink access system of the present disclosure.

Fig. 11 is a schematic diagram of further embodiments of an uplink access system of the present disclosure.

Fig. 12 is a schematic diagram of further embodiments of an uplink access system according to the present disclosure.

Detailed Description

The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.

A flow chart of some embodiments of the uplink access method of the present disclosure is shown in fig. 5.

In step 501, the terminal reports RLF information to a second cell connected to the terminal when the uplink access to the first cell fails. In some embodiments, if the terminal is an SA terminal, the first cell is a 5G cell, and the second cell is a cell successfully accessed by the terminal after the failure of attempting to access the first cell. In other embodiments, if the terminal is an NSA terminal, the first cell is a new air interface NR cell, and the second cell is an LTE cell to which the terminal is accessed.

In some embodiments, the RLF information reported by the terminal to the second cell includes information, such as uplink carrier number information, capable of analyzing the problem of the parameter of the first cell, so as to facilitate optimization of parameter configuration of the first cell based on the information.

In step 502, the second cell generates an error report according to the RLF information, wherein the error report includes the cell identity of the first cell and the failure reason. In some embodiments, the failure cause information may be a maximum Preamble (random access Preamble) access number, a contention random access failure, and the like.

In step 503, the second cell sends the error report to the first cell or the network management entity, so as to generate an uplink access parameter adjustment policy for the first cell according to the error report.

In step 504, the first cell adjusts the policy adjustment parameter according to the uplink access parameter.

In some embodiments, in an SA networking scenario, as shown in fig. 6, a flowchart of some embodiments of a process in which a terminal reports RLF information to a second cell in an uplink access method according to the present disclosure may be shown in fig. 7, and a signaling interaction flow may be shown in fig. 8A.

In step 701, after failing to access the first cell, the terminal records uplink access information and attempts to access another cell, such as a second cell. The uplink access information comprises an uplink carrier number, a downlink cell identifier, a downlink cell frequency point number, terminal state information, failure reason information and a measurement result of the downlink cell. In some embodiments, one or more of the PRACH transmit power before terminal failure or the PUSCH transmit power before terminal failure may also be included.

In some embodiments, the uplink access information and the field length occupied by the uplink access information include, but are not limited to, the following:

the uplink carrier numbering is as follows: 3 bits (000 is common uplink carrier, and the rest is uplink supplementary carrier);

downlink cell identity: 36bit;

frequency point number of downlink cell;

the terminal state: using an enumeration type to indicate inactive and connected states;

the reason for failure is as follows: the enumeration value distinguishes the conditions of maximum Preamble access times, failure of competitive random access and the like;

PRACH transmitting power before terminal failure;

PUSCH transmitting power before terminal failure;

measurement results of downlink cells: including RSRP/RSRQ/SINR, etc.;

the above field sizes are examples only and do not constitute undue limitations on the present disclosure.

In step 702, in case of successful access to the second cell, sending RRC message to the second cell, where the RRC message includes an RLF information identifier, as shown in 801.

In step 703, the second cell instructs the terminal to report the RLF information when determining that the RRC information includes the RLF information identifier, as shown in 802.

In step 704, the terminal reports the uplink access information through the RRC message. In some embodiments, the RRC message includes an RRC Transaction Identifier and uplink access information, as shown at 803.

In some embodiments, the second cell may determine, according to the uplink access information reported by the terminal, a cell in which the terminal fails, generate error report information, and forward the error report information to the first cell through an interface between cells. The error report includes the cell identifier of the first cell in which the terminal failed to access and the uplink access information mentioned above. The second cell may send the error report to the network management entity, and the network management entity generates an updated configuration policy and then sends the updated configuration policy to the first cell; alternatively, as shown in step 804 in fig. 8A, the second cell sends an error report to the first cell, and the first cell generates optimized configuration parameters and updates its configuration by itself.

By the method, under the condition that the terminal is an SA terminal, the information of uplink access failure is recorded, and the related information is notified to the network side, so that the network side optimizes the cell configuration, and the success rate of the same or different terminals accessing the cell again is improved.

In other embodiments, in the case that the terminal is an NSA terminal, the terminal may attempt to access a third cell after the access failure of the first cell, and the terminal maintains a connection with the second cell (LTE cell). The terminal reports the RLF information to the second cell as shown in 811 in fig. 8B. The RLF information may include an uplink carrier number: 3 bits. In some embodiments, one or more of the PRACH transmit power before terminal failure or the PUSCH transmit power before terminal failure may also be included. The above field sizes are examples only and do not constitute undue limitations on the present disclosure.

When the second cell receives the RLF information, an error report may be generated and sent to a network management entity or forwarded to the first cell via an inter-cell X2 interface, as shown at 812. In some embodiments, the error report may include:

failed cell identification: a cell identity of the first cell;

the reason for failure;

measurement results of downlink cells: including RSRP/RSRQ/SINR, etc.;

RLF radio failure information.

By the method, the problem can be timely found when the SCG fails to uplink in the NSA scene, and related parameters are provided for the SCG side to perform corresponding parameter adjustment, so that the parameter configuration is optimized, and the success rate of the next access of the same or different terminals is improved.

A flowchart of still other embodiments of the uplink access method of the present disclosure is shown in fig. 9.

In 901, the terminal reports RLF information to a second cell connected to the terminal when uplink access to the first cell fails. As mentioned above, the terminal may be an SA terminal or an NSA terminal.

At 902, the second cell generates an error report based on the RLF information. The second cell may alternatively be performed in the following

steps

903 and 905.

In 903, the second cell sends an error report to the first cell.

At 904, the first cell generates an uplink access parameter adjustment strategy for itself according to the error report.

In 905, the second cell sends the error report to a network management entity.

At 906, the network management entity generates an uplink access parameter adjustment policy for the first cell according to the error report, and sends the uplink access parameter adjustment policy to the first cell.

In some embodiments, whether in step 904 or step 906, generating an uplink access parameter adjustment policy for the error report may include determining which uplink carrier or carriers' parameters need to be adjusted. In some embodiments, the uplink carrier numbers in the error report may be counted, and if the number of times of occurrence of one or some uplink carrier numbers is large, adjustment is required. In some embodiments, the parameters of the uplink carriers with the adjustment numbers occurring more than a first preset threshold are determined, so that the adjustment is targeted and targeted.

In some embodiments, the problem of the first cell can be analyzed according to the error report, and then the adjustment can be made in a targeted manner, such as:

determining the proportion that the terminal state is in an inactive state and the failure reason is the failure of the competitive random access according to the uplink access information; if the ratio is larger than the second preset threshold, determining that the access fails due to unreasonable setting of the contention timer, and adjusting the parameters of the contention timer.

Another example is:

and determining that the state of the terminal is a non-activated state or an activated state according to the uplink access information, and if the failure reason is the maximum sending times of the random access preamble, if the PRACH (physical random access channel) transmitting power of the terminal before the terminal fails to access the first cell is equal to the maximum transmitting value and the measurement result of the downlink cell is higher than a third preset threshold, determining to adjust the RACH (random access channel) parameters, and adjusting the uplink carrier used by the terminal according to the coverage in a plurality of uplink carrier scenes.

For another example:

and determining that the terminal state is a non-activated state or an activated state according to the uplink access information, and if the measurement result of the downlink cell is lower than a third preset threshold, determining that the access is failed due to weak coverage after switching, and needing to adjust a switching parameter to delay the user to be switched to the first cell.

In 907, the first cell adjusts the policy adjustment parameter according to the uplink access parameter.

By the method, when a network side needs to automatically optimize the access performance of a plurality of uplink carriers in a scene with a plurality of LTE carriers in an NR coverage area, the terminal assists in reporting the failure information, and the network side optimizes based on the collected information, so that the blank that the current 5G standard does not support the reporting of the uplink failure information is made up, and the problem of access optimization of a plurality of supplementary uplink carriers is also supported; meanwhile, aiming at NSA scene, the problem discovery when SCG uplink fails is realized, and related parameters are provided for SCG side to carry out corresponding parameter adjustment. The method has small change to related protocols, so the method has good backward compatibility and deployment feasibility, and is convenient for popularization and application.

A schematic diagram of some embodiments of an uplink access system 1000 of the present disclosure is shown in fig. 10.

The terminal 1001 reports radio link failure RLF information to a second cell to which the terminal is connected, in the case of failure in uplink access to the first cell. If the terminal is an independent networking SA terminal, the first cell is a 5G cell, and the second cell is a cell successfully accessed after the terminal fails to attempt to access the first cell; and if the terminal is a non-independent networking NSA terminal, the first cell is a new air interface NR cell, and the second cell is an LTE cell accessed by the terminal. In some embodiments, the RLF information reported by the terminal to the second cell includes information, such as uplink carrier number information, capable of analyzing the problem of the parameter of the first cell, so as to facilitate optimization of parameter configuration of the first cell based on the information.

The second cell 1003 can generate an error report according to the RLF information, where the error report includes the cell identifier of the first cell and a failure reason, and in some embodiments, the failure reason information may be a maximum Preamble (random access Preamble) access frequency, a contention random access failure, and the like. The second cell 1003 sends the error report to the first cell or the network management entity, so as to generate an uplink access parameter adjustment policy for the first cell according to the error report.

The first cell 1002 can adjust the policy adjustment parameter according to the uplink access parameter.

In the system, the terminal can report the relevant parameter information of the cell with failed access to the cell connected with the terminal, and the cell with the obtained information generates an error report, so that the cell with failed access of the terminal can adjust parameters according to the error report, optimize cell parameters and improve the success rate of uplink access of the terminal.

In some embodiments, if the terminal is an SA terminal, the terminal and the second cell may complete RLF information reporting in the manner shown in the embodiments of fig. 7 and 8A; if the terminal is an NSA terminal, the terminal may complete reporting of RLF information in the manner in the embodiment shown in fig. 8B, thereby implementing support for both SA and NSA, facilitating configuration of cell optimization parameters, and improving the success rate of next access of the same or different terminals.

In some embodiments, the first cell or network management entity receiving the error report may determine which uplink carrier or carriers' parameters need to be adjusted based on the error report. In some embodiments, the uplink carrier numbers in the error report may be counted, and if the number of times of occurrence of one or some uplink carrier numbers is large, the adjustment is needed. In some embodiments, the parameters of the uplink carriers with the adjustment numbers occurring more than the first preset threshold are determined, so that the adjustment is targeted and targeted, and the adjustment accuracy is improved.

In some embodiments, the first cell or the network management entity receiving the error report may analyze the problem of the first cell according to the error report, and then perform a targeted adjustment, for example:

Another example is:

and determining that the state of the terminal is a non-activated state or an activated state according to the uplink access information, and if the failure reason is the maximum sending times of the random access preamble, if the last PRACH (physical random access channel) transmitting power of the terminal before the terminal fails to access the first cell is equal to the maximum transmitting value and the measurement result of the downlink cell is higher than a third preset threshold, determining to adjust the RACH (random access channel) parameters, and adjusting the uplink carrier used by the terminal according to the coverage in a plurality of uplink carrier scenes.

For another example:

If the uplink access parameter adjustment strategy is generated by a network management entity, the uplink access parameter adjustment strategy is sent to the first cell so that the first cell optimizes self configuration; and if the first cell generates the uplink access parameter, the first cell adjusts the configuration of the first cell according to the uplink access parameter adjusting strategy.

In the uplink access system, the terminal records the random access failure information after the access failure and provides the related information to the network successfully accessed by the terminal, and the network side optimizes the uplink access parameter configuration of the designated frequency point according to the statistical information, thereby realizing the improvement of the uplink random access success rate.

A schematic structural diagram of an embodiment of the uplink access system of the present disclosure is shown in fig. 11. The uplink access system comprises a memory 1101 and a processor 1102. Wherein: the memory 1101 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used for storing the instructions in the corresponding embodiments of the uplink access method above. The processor 1102 is coupled to the memory 1101 and may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 1102 is configured to execute the instructions stored in the memory, so as to optimize cell parameters and improve the success rate of uplink access of the terminal.

In one embodiment, as also shown in fig. 12, the uplink access system 1200 includes a memory 1201 and a processor 1202. Processor 1202 is coupled to memory 1201 through BUS 1203. The upstream access system 1200 may also be coupled to an external storage 1205 via the storage interface 1204 for facilitating retrieval of external data, and may also be coupled to a network or another computer system (not shown) via the network interface 1206. And will not be described in detail herein.

In the embodiment, the data instruction is stored in the memory, and the instruction is processed by the processor, so that the cell parameter can be optimized, and the success rate of uplink access of the terminal is improved.

In another embodiment, a computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the method in the corresponding embodiment of the uplink access method. As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.

The methods and apparatus of the present disclosure may be implemented in a number of ways. For example, the methods and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

Finally, it should be noted that: the above examples are intended only to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the specific embodiments of the disclosure or equivalent substitutions for parts of the technical features may still be made; all of which are intended to be covered by the scope of the claims of this disclosure without departing from the spirit thereof.

Claims

1. An uplink access method comprises the following steps:

under the condition that the terminal fails to access the first cell in the uplink, reporting Radio Link Failure (RLF) information to a second cell connected with the terminal, wherein the RLF information comprises uplink carrier number information, and the RLF information comprises the following information: if the terminal is an independent networking SA terminal, the first cell is a 5G cell, and the second cell is a cell successfully accessed after the terminal fails to attempt to access the first cell; if the terminal is a non-independent network configuration NSA terminal, the first cell is a new air interface NR cell, and the second cell is an LTE cell accessed by the terminal;

the second cell generates an error report according to the RLF information, wherein the error report comprises the cell identification and the failure reason of the first cell;

the second cell sends the error report to the first cell or a network management entity so as to generate an uplink access parameter adjustment strategy for the first cell according to the error report, including: counting the uplink carrier numbers in the error report, and determining the parameters of the uplink carriers of which the number occurrence times of the adjustment numbers are greater than a first preset threshold;

and the first cell adjusts the strategy adjustment parameters according to the uplink access parameters.

2. The method of claim 1, wherein, in case that the terminal is an SA terminal, the reporting of the RLF information to the second cell to which the terminal is connected comprises:

after a terminal fails to access a first cell, recording uplink access information and trying to access other cells, wherein the uplink access information comprises an uplink carrier number, a downlink cell identifier, a downlink cell frequency point number, terminal state information, failure reason information and a measurement result of the downlink cell;

under the condition that a second cell is successfully accessed, sending Radio Resource Control (RRC) information to the second cell, wherein the RRC information comprises an RLF information identifier;

the second cell indicates the terminal to report the RLF information according to the RLF information identifier;

and the terminal reports the uplink access information through RRC information.

3. The method according to claim 2, wherein the uplink access information further includes Physical Random Access Channel (PRACH) transmission power before the terminal fails to access the first cell and/or Physical Uplink Shared Channel (PUSCH) transmission power before the terminal fails to access the first cell.

4. The method of claim 1, wherein, in case that the terminal is an NSA terminal, the reporting of the RLF information to the second cell to which the terminal is connected comprises:

and after the terminal fails to access the first cell, reporting RLF information to a connected second cell, wherein the RLF information comprises the number information of the uplink carrier.

5. The method of claim 4, wherein the RLF information further comprises Physical Random Access Channel (PRACH) transmission power before the failure of the terminal to access the first cell and/or Physical Uplink Shared Channel (PUSCH) transmission power before the failure of the terminal to access the first cell.

6. The method of claim 2 or 3, wherein the second cell generating an error report from the RLF information comprises:

the second cell acquires the cell identification of the cell with terminal access failure according to the uplink access information;

and the second cell generates the error report, wherein the error report comprises the cell identifier of the first cell and the uplink access information.

7. The method of claim 4 or 5, wherein the second cell generating an error report from the RLF information comprises:

the second cell acquires the cell identification of the cell with terminal access failure according to the RLF information;

and the second cell generates the error report, wherein the error report comprises the cell identifier of the first cell, failure reason information, the measurement result of the downlink cell and the RLF information.

8. The method of claim 1, wherein the second cell transmitting the error report to the first cell comprises:

and the second cell sends the error report to the first cell through an inter-cell interface.

9. The method of claim 1, wherein the generating an uplink access parameter adjustment policy for the first cell from the error report further comprises at least one of:

determining the terminal state as a non-activated state and the failure reason as the proportion of the competitive random access failure according to the uplink access information; if the ratio is larger than a second preset threshold, determining to adjust the parameters of the contention timer;

determining whether the terminal state is a non-activated state or an activated state according to the uplink access information, and if the failure reason is the maximum sending times of random access preambles, if the PRACH (physical random access channel) transmitting power of the terminal before the terminal fails to access the first cell is equal to the maximum transmitting value, and the measurement result of the downlink cell is higher than a third preset threshold, determining to adjust the RACH (random access channel) parameters;

or the like, or, alternatively,

and determining that the terminal state is a non-activated state or an activated state according to the uplink access information, and determining to adjust a switching parameter to delay switching of a user to the first cell if the measurement result of the downlink cell is lower than a third preset threshold.

10. An uplink access system, comprising:

a terminal configured to report Radio Link Failure (RLF) information to a second cell connected to the terminal under the condition that uplink access to a first cell fails, where the RLF information includes uplink carrier number information, and where: if the terminal is an independent networking SA terminal, the first cell is a 5G cell, and the second cell is a cell successfully accessed after the terminal fails to attempt to access the first cell; if the terminal is a non-independent network configuration NSA terminal, the first cell is a new air interface NR cell, and the second cell is an LTE cell accessed by the terminal;

a second cell configured to generate an error report according to the RLF information, wherein the error report includes a cell identity and a failure reason of the first cell; sending the error report to the first cell or a network management entity so as to generate an uplink access parameter adjustment strategy for the first cell according to the error report, including: counting the uplink carrier numbers in the error report, and determining the parameters of the uplink carriers of which the number occurrence times of the adjustment numbers are greater than a first preset threshold;

a first cell configured to adjust a policy adjustment parameter according to the uplink access parameter.

11. The system of claim 10, wherein in case the terminal is an SA terminal:

the terminal is configured to record uplink access information and try to access other cells after failure of accessing a first cell, wherein the uplink access information comprises an uplink carrier number, a downlink cell identifier, a downlink cell frequency point number, terminal state information, failure reason information and a measurement result of the downlink cell; under the condition of successful access to a second cell, sending Radio Resource Control (RRC) information to the second cell, wherein the RRC information comprises an RLF information identifier, and reporting the uplink access information after receiving a reporting instruction from the second cell;

and the second cell is configured to instruct the terminal to report the RLF information according to the RLF information identifier in the RRC information sent after the terminal is accessed.

12. The system of claim 11, wherein, in case the terminal is an NSA terminal:

the terminal is configured to report RLF information to a connected second cell after failure of accessing the first cell, wherein the RLF information comprises uplink carrier number information.

13. The system of claim 11, wherein the second cell is configured to: acquiring a cell identifier of a cell in which the terminal fails to access according to the uplink access information; and generating the error report, wherein the error report comprises the cell identifier of the first cell and the uplink access information.

14. The system of claim 12, wherein the second cell is configured to: acquiring the cell identification of the cell in which the terminal fails to access according to the RLF information; and generating the error report, wherein the error report comprises the cell identifier of the first cell, failure reason information, the measurement result of the downlink cell and the RLF information.

15. The system of claim 10, wherein,

the second cell is configured to send the error report to the first cell over an inter-cell interface; the first cell is further configured to generate an uplink access parameter adjustment strategy for the first cell according to the error report; or the like, or, alternatively,

the second cell is configured to send the error report to the network management entity; and the network management entity is configured to generate an uplink access parameter adjustment strategy aiming at the first cell according to the error report and send the uplink access parameter adjustment strategy to the first cell.

16. The system of claim 11, wherein the generating an uplink access parameter adjustment policy for the first cell from the error report comprises at least one of:

determining the terminal state as an inactive state and the failure reason as the proportion of the competitive random access failure according to the uplink access information; if the ratio is larger than a second preset threshold, determining to adjust the parameters of the contention timer;

determining whether the terminal state is a non-activated state or an activated state according to the uplink access information, and if the failure reason is the maximum sending times of random access preambles, if the PRACH (physical random access channel) transmitting power of the terminal for the last time before the terminal fails to access the first cell is equal to the maximum transmitting value, and the measurement result of the downlink cell is higher than a third preset threshold, determining to adjust the RACH (random access channel) parameters;

or the like, or, alternatively,

17. An uplink access system, comprising:

a memory; and

a processor coupled to the memory, the processor configured to perform the method of any of claims 1-9 based on instructions stored in the memory.

18. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any one of claims 1 to 9.